401172437 has 2 divisors, whose sum is σ = 401172438. Its totient is φ = 401172436.

The previous prime is 401172433. The next prime is 401172439. The reversal of 401172437 is 734271104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398641156 + 2531281 = 19966^2 + 1591^2 .

It is a cyclic number.

It is not a de Polignac number, because 401172437 - 2² = 401172433 is a prime.

Together with 401172439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401172433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200586218 + 200586219.

It is an arithmetic number, because the mean of its divisors is an integer number (200586219).

Almost surely, 2^401172437 is an apocalyptic number.

It is an amenable number.

401172437 is a deficient number, since it is larger than the sum of its proper divisors (1).

401172437 is an equidigital number, since it uses as much as digits as its factorization.

401172437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 401172437 is about 20029.2894781617. The cubic root of 401172437 is about 737.5254799968.

The spelling of 401172437 in words is "four hundred one million, one hundred seventy-two thousand, four hundred thirty-seven".